Composition for deactivating the surface of concrete or mortar and its process of application
AssigneeCiments Francais
InventorsMichel Pasquier, Pierre Colombet, Pierre Cassat
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Abstract
The surface deactivating composition for concrete or mortar comprising a retardant, water and if desired a rheology modifying agent of the HASE type (emulsion, soluble in alkali, of a polymer with hydrophobic modification), characterized in that the retardant is a carboxylic acid and in that the concentration of HASE is greater than or equal to 0.5% by weight. The process of application consists in applying this deactivating composition in proportions of the order of 0.25+0.05 liter per square meter of the surface, then washing with water this surface after a predetermined period.
Claims10
A surface deactivating composition for concrete or mortar, comprising carboxylic acid as a retardant, water and a hydrophobically modified alkaline soluble emulsion polymer as a rheology modifying agent in a concentration greater than or equal to 0.5% by weight.
Process for modifying a surface of concrete or mortar during its setting, which comprises:
- providing a surface deactivating composition comprising carboxylic acid as a retardant, water and a hydrophobically modified alkaline soluble emulsion polymer as a rheology modifying agent in a concentration greater than or equal to 0.5% by weight;
- applying the deactivating composition to the surface in proportions of about 0.25+0.05 liter per square meter of said surface;
- and thereafter
- washing said surface with water.
Dependencies are inferred from the claim text.